How do I add custom options for messages (rich text)?

Rich text is enabled by default. To switch to plain text:

1. Open a message. This could be a new message, or one you are replying to or forwarding.
2. Select the 3 dots next to the From field.
3. Select Plain text from the dropdown.
   

Note:

• To switch to using plain text by default, go to Settings > Writing Email and check the box for Compose new emails as plain text.
• In Classic mode, select Options > Format As Plain Text.